Kenwood KDV-C810, Service Manual

Page: 11 / 36

11
KDV-C810/C820/C830
/C840/C860
TIMING CHART OF MECHANISM OPERATION
Magazine ejection operation (for operation to
DISC1 playback after magazine pack eject)
If the input of EJECT SW (SW301) is detected, the playback
disc under present will be returned to a magazine pack, an
elevator mechanism part will be moved to an eject position
(most below position), and a magazine pack will be dis-
charged. After that, an elevator mechanism part is moved to
DISC1.
1, LOAD+ (IC301 and 1PIN) is set to L, LOAD- (IC301, 2PIN)
is set to H, and DISC1 tray is returned to a magazine pack.
2, LOADING MOTOR (VM3) is driven until LOAD OUT SW
(SW1 : IC301, 28PIN) is set to L.
3, LOAD+ (IC301, 1PIN) and LOAD- (IC301, 2PIN) are set to
H, and loading operation is made to STOP.
4, Elevator motor control terminal ELV+ (3PIN) is set to L,
ELV- (4PIN) is set to H, and an elevator mechanism is
moved downward.
5, ELEVATOR MOTOR (VM4) is driven until DOWN SW (SW3)
is set to L.
6, EJECT position detection of the DISCC (31PIN) is carried
out. H->L (it checks twice).
7, ELV+ (3PIN) and ELV- (4PIN) are set to H, and elevator
operation is made to STOP.
8, After 2 seconds of magazine pack eject, elevator motor
control terminal ELV+ (3PIN) is set to H, ELV- (4PIN) is set
to L, and an elevator mechanism part is moved upward.
9, UP SW (SW2 for IC301, 26PIN) checks L.
10, After checking DISCC (31PIN) (PHT1), DISC1 position
detection is carried out.
11, ELV+ (3PIN) and ELV- (4PIN) are set to H, and elevator
operation is made to STOP.
ELV +
(IC301 3pin)
ELV -
(IC301 4pin)
LOAD +
(IC301 1pin)
LOAD -
(IC301 2pin)
LOAD OUT SW
(SW1 , IC301 28pin)
CLAMP SW
(SW302 , IC301 29pin)
UP SW
(SW2 , IC301 26pin)
DOWN SW
(SW3 , IC301 27pin)
DISC.C
(PHT1 , IC301 31pin)
MAG SW
(SW5, IC301 64pin)
EJECT SW
(SW5, IC301 45pin)
ELEVATOR
DOWN EJECT
POSITION DISC UNLOADING
ELEVATOR
UP
DISCON
(IC301 33pin)
Disc
1
Disc
10 Disc
10 Disc
1
H
H L H
L H
L H
H
L
H L
L
H
H
L
L
H
L
H
L
L
H
L
L
H
H
L
Disc 2 to 9 Disc 2 to 9
Timing chart 4
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9 9
2
8 9
4 2
9 8
TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299